Commune/Paroisse : Castelsarrasin [Tarn-et-Garonne] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | BIAR | 1832 | - | 1 |
| 2. | BIARD | 1834-1858 | 3 | 1 |
| 3. | BIAU | 1901-1902 | - | 2 |
| 4. | BIBEN | 1810-1840 | 1 | 1 |
| 5. | BILA | 1803-1900 | 10 | 10 |
| 6. | BILATE | 1872 | 1 | - |
| 7. | BILATTE | 1834 | - | 1 |
| 8. | BILLA | 1842-1874 | 3 | - |
| 9. | BILLIÈRES | 1859-1895 | 2 | 1 |
| 10. | BILLY | 1886 | - | 1 |
| 11. | BILOIR | 1815-1877 | 2 | 2 |
| 12. | BINET | 1867 | - | 1 |
| 13. | BIROL | 1812-1851 | 2 | - |
| 14. | BIRON | 1835 | 1 | - |
| 15. | BISSIERES | 1875-1906 | 2 | 3 |
